shevaun williams

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The ferrous structure of this reading room—a spine of slender, cast-iron Ionic columns dividing the space into twin aisles and supporting openwork iron arches that carry barrel vaults of plaster reinforced by iron mesh—has always been revered by Modernists for its introduction of high technology into a monumental building. from wiki

This is the Henri Labrouste reading room at Sainte-Genevieve Library and this is Paris!